Patent No. EP3834824 (titled "Method Of Treating Cancer Using Selective Estrogen Receptor Modulators") was filed by Duke University on Mar 28, 2015. The application was issued on Oct 22, 2025.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative |
|---|---|---|
| GENERICS UK | Jul 21, 2026 | CROW |
| SYNTHON | Jul 20, 2026 | HAMM&WITTKOPP PATENTANWÄLTE PARTMBB |
| TEVA PHARMACEUTICAL INDUSTRIES LTD | Jul 20, 2026 | VON KAUFFMANN |
| SANDOZ | Jul 14, 2026 | ELKINGTON AND FIFE |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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